,,,,,@@@,@                                          @@,,,@,@,@
@,,,,@,,@@                                          @,@,,@@@@@
,@,,,@@,@,                                          ,@@@,@,,,,
,@@,,@,@@@                                          @@,,@@@,,,
,@,@,@@@,,                                          ,,@,@,,@,,
,@@@@@,,@,                  Rails                   ,,@@@@,@@,
,@,,,,@,@@                                          ,,@,,,@@,@
@@@,,,@@@,                                          ,,@@,,@,@@
,,,@,,@,,@ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @,@,@,@@@,
,,,@@,@@,@                                          @@@@@@@,,@
@,,@,@@,@@ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ ,,,,,,,@,@
,@,@@@,@@,                                          @,,,,,,@@@
@@@@,,@@,@                                          ,@,,,,,@,,
@,,,@,@,@@ Trains  Are  So  Constructed  That  They ,@@,,,,@@,
@@,,@@@@@, Have To Follow A Set Path.  This Path Is @@,@,,,@,@
,,@,@,,,,@ Called  A "Railway",  Which Is Comprised @,@@@,,@@@
@,@@@@,,,@ Of Two  Metal Rails, Hence Its Nickname. @@@,,@,@,,
@@@,,,@,,@                                          @,,@,@@@@,
@,,@,,@@,@ Because  The  Low Friction  Between  The @@,@@@,,,@
,@,@@,@,@@ Wheels Of The Train And  The Rail Metal, ,,@@,,@,,@
@@@@,@@@@, There Are Limits  For  How Acute A Curve @,@,@,@@,@
,,,,@@,,,@ Can  Be, And Even  More  So For How Much @@@@@@@,@@
@,,,@,@,,@ The  Ground  Under   The  Rails  Can  Be @,,,,,,@@,
@@,,@@@@,@ Sloped. Thus A  Railway Is Often Not Led @@,,,,,@,@
,,@,@,,,@@ On Top Of  Hills, Rather Through Them In ,,@,,,,@@@
@,@@@@,,@, TunnelS   (If  They   Are   Large),   Or @,@@,,,@,,
@@@,,,@,@@            Artificial ChasmS.            ,@@,@,,@@,
@,,@,,@@@,                                          ,@,@@@,@,@
,@,@@,@,,@ There Will Be Trees On  The  Side Of The @@@@,,@@@@
@@@@,@@@,@ Rails, But Not  Too Close, Or They  Will @,,,@,@,,,
@,,,@@,,@@ Be  Cut  Down By The  Railway  Janitors. ,@,,@@@@,,
@@,,@,@,@, There  Will  Be  Plains,  And Bodies  Of @@@,@,,,@,
@,@,@@@@@@                  Water.                  ,,,@@@,,@@
,@@@@,,,,,                                          ,,,@,,@,@,
,@,,,@,,,, Trains Go  By  Day And  By Night.  Along ,,,@@,@@@@
@@@,,@@,,,      The Way, There Is Information       ,,,@,@@,,,
@,,@,@,@,, Scattered, Often Put  On Top  Of  Poles, ,,,@@@,@,,
@@,@@@@@@, To Be Interpreted By The Train  Drivers. @,,@,,@@@,
@,@@,,,,,@ Different  Parts  Of  The  Railway  Have @@,@@,@,,@
,@@,@,,,,@          Different Speed Limits.         ,,@@,@@@,@
@@,@@@,,,@                                          @,@,@@,,@@
,,@@,,@,,@ Sometimes, Trains Have To  Stop And Wait ,@@@@,@,@,
,,@,@,@@,@ For Something To Happen, Far  Away. This ,@,,,@@@@@
@,@@@@@,@@ Is  Signaled  By  Red Or  Green  Lights. ,@@,,@,,,,
@@@,,,,@@,                                          @@,@,@@,,,
@,,@,,,@,@                 @@@@@@@@                 ,,@@@@,@,,
@@,@@,,@@@                                          @,@,,,@@@,
@,@@,@,@,, Many  People Follow  The  Rails By Foot. ,@@@,,@,,@
,@@,@@@@@, Often  This  Proves  To  Be  The Shorter ,@,,@,@@,@
@@,@@,,,,@ Path Between  Two  Points. However  This ,@@,@@@,@@
,,@@,@,,,@ Is  Frowned  Upon,  And   Very  Impolite @@,@@,,@@,
,,@,@@@,,@        Toward The Train Drivers!         @,@@,@,@,@
@,@@@,,@,@                                          @@@,@@@@@@
,@@,,@,@@@                                          @,,@@,,,,,
,@,@,@@@,,                                          ,@,@,@,,,,
,@@@@@,,@,                                          @@@@@@@,,,
,@,,,,@,@@                                          ,,,,,,,@,,
,@@,,,@@@,                                          @,,,,,,@@,